The Space Exams Solution

for t in range(int(input())):
    n, m = map(int,input().split())
    above_average_dictionary = {}
    for i in range(m):
        marks = list(map(int,input().split()))
        average = sum(marks)//n
        for i in range(n):
            if marks[i] > average:
                above_average_dictionary[i] = 1
    print(len(above_average_dictionary))